Machine for making spiral wire springs



(No Model.) 2 Sheets-Sheet 1.v

H. S. HALL.

MACHINE FOR MAKING SPIRAL WIRE SPRINGS.

No. 350,979. Patented Oct. 19, 1886,

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MACHINE FOR MAKING SPIRAL WIRE SPRINGS. No. 350,979. Patented Oct. 19, 1886.

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UNITED STATES PATENT @rrrca:

HIE-AM S. HALL, OF JAMESTOlVN, NEAV YORK.

MACHINE FOR MAKING SPIRAL WIRE SPRINGS.

-FICATIONforming part ofLetters Patent No. 350,979, dated October 19, 1886.

Application filed August 16, 1886.

To aZZ whom it may concern:

Be it known that I, HIRAM S. HALL, a citizen of the United States, residing at Jamestown, in the county of Chautauqua, State of New York, have invented certain new and useful Improvements in Machines for Making Spiral \Vire Springs, of which the following is a specification, reference being had therein to the accompanying drawings.

The objects of my improvement are to provide a machine for making single and double cone springs; and it consists in the combina tion of means to give an additional bend or set to the wire after it leaves the reel and before it is eoiled upon the forming-cone, to cause the completed spring to stand higher than when produced without additional bend, and also in the peculiar means to allow the driven cone to revolve backward and release the wire I accomplish these objects by the construction illustrated in the accompanying drawings, in which- Figure 1 is an end view of a machine constructed in accordance with my invention. Fig. 2 is a front view of the same with a part of the wire-feeding arms broken away. Fig. 2 isa front view of the spring clamping and releasing arm used in making single-cone springs. Fig. 3 is a top view of the machine. Fig. 4 is a front view of the cams and a part of the ;rod to oscillate the support for the loose cone and permit the removal of the spring. Fig. 5 is a side view of the upper end of the wire-guide. Fig. 6 is a top view of the wire-guide clamp with its cap removed. Fig. 7 is a perspective view of the small end of a single spring-forming cone and of the plunger used to retain thereon the small end of a spring. Fig. 8 is a perspective of the small end of a conical spring.

Upon the frame A of the machine there is mounted in suitable bearings a shaft, B, can rying the driving-pulley B and upon one end of the shaft is secured the pinion 13*, that meshes with a cog-wheel, 0, upon the shaft 0. This wheel has one of its arms slot-ted and a pitman-rod, c, has one of its ends adjustably pivoted to said arm, while the opposite end is pivoted to the outer end of awedgeshaped arm, (I, that has its inner end pivoted at (Z to a segmental gear, D, pivoted to the frame at d. This segmental gear meshes with Serial No. 211,010. (No model.)

f, .secured to the small end of the cone F entering a correspondiugly-formed mortise in the small end of the cone F. The cone F is mounted upon a short shaft retained in bearings in the arm A, that is pivoted upon a bolt, a adj ustably retained in a horizontal slot, a, in the upper end of the frame A. The cone F is disconnected from the cone F at the proper time to remove the spring coiled there on by swinging the lower end of the arm A upward. This is done by means of the connecting-rod A, pivoted at a to the upper end of the arm A. The lower end of the connecting-rod is longitudinally slotted at a, Fig. 4, for the passage of the shaft G, carrying cams g and g, acting against rollers projectingfrom the sides of the connecting-rod to raise and lower the latter. The shaft G also operates the wire-feeding mechanism, as will be hereinafter described. This shaft is mounted in bearings 9*, that arelaterally adjustable to permit the making of springs of various lengths. It is operated by a bevel-gear, 1/, mounted thereon, meshing with a bevel-gear, 0', adj usta bly secured upon the shaft 0.

In order to stop or nearly stop the cone F, while the wire is secured to the cone or while it is out and the spring is removed, the wedgeshaped arm d has a certain amount of play within the recess made in the segmental gear D, and the stoppage produced takes place while the pitman 0 goes slow or is at its dead-center; and to increase the length of the stoppage the wedge (Z has pivoted thereto a dog, 11, that normally bears against one of the inner surfaces of the segmental gear until near the end of its course,when it meets the end of one of the arms of the trip l,which causes the point of the dog (1 to drop to the bottom of the cavity (2" made in the segmental gear. The trip d is formed of two arms substantially at right angles to each other, and one of said arms is depressed by a pin, 0 projecting laterally from the side of the gear-wheel (fl during its revolution, coming in contact with said arm at the same time that the end of the arm d' comes in contact with the dog d, and, raising its free end, causes it to enter the cavity (P, and permits the segment gear to remain stationary for a brief space of time.

In order to cause the segment to retrograde quickly, it is made to strike at the end of its course against a spring, D projecting from the side of the frame of the machine.

To release the tension brought upon the spring while giving it form upon the cones F F, and thus facilitate its removal as soon as said cones are uncoupled, the shaft of the cone 15 carries a pinion, f that meshes with a gearwheel, f, carried also by the arm A and upon the shaft of the gear f thercis a coiled spring, f", that becomes wound up while the cones are revolved to produce the double-cone spring; but when the cone F is released, the spring J unwinds the cone untilthe pin f, on the side of the gearf comes in contact with the plate a and arrests any further unwinding after having brought the clamp f on the cone F in a proper position for receiving the end of the wire to produce the next spring.

when it is desired to use the machine for making single-cone springs, the arm A is disconnected from the frame, and with it the cone F the gear f, and other parts carried by said arm, and a shorter arm, A", Fig. 2, is used. This arm carries a pinion, gear-wheel, coilspring, 800., as described in regard to the arm A but the gear-wheel is smaller, as it is not required that it should revolve the pinion so many times for a single spring as for a double spring, and the pivot-pin of the arm A? is retained adj ustabl y in a slot, to, of the frame.

To retain the end of the wire (intended for the spring) connected with the small end of the cone the latter has a groove or recess, a, that may be slightly undercut, in which the acute edge of a wedge-shaped plunger, a, enters and gives to the end of the spring a peculiar outward bend, a", and retains it connected with the cone. in connection with two pins, a", between which the spring c is received, and the cylindrical end ofthis plunger a formsthe shaft of the pinion f To direct or feed the wire along the springforming cone or cones while the latter are re volving, a carriage, H, is used. Its lower portion is in theform of an arch, theends of which have eyes 71, to receive the guide-rod A, upon which it is reciprocated by the cam Hflmounted upon theshaft G, said cam acting against rollers If, adjustably secured upon the chord or stringer H of the arch H. The central upper arm,H, of the carriagehas pivoted atits upper end, at W, Fig. 5,an arm, hfllying nearly horizontally between the forks in the side guide, 7/, of the upper arm, H The free end of the arm h is capable of a certain amount of vertical motion, to cause the end of the wire to follow the increasing diameter of the cone F (for a single-cone spring) or of the first decreasing and then increasing diameter of the cones for a double-cone spring. To produce this vertical motion of the free end of the arm h, it carriesapendent rod, h. to thelower end of which is secured a finger, 7L, the end of which enters a curved groove, i, in the guide-plate I. The arm H is also provided with a horizontal finger, 7f, the end of which is grooved 011 the under side to receivetheupperedge of theguideplate I, by which it is guided horizontally. This plate is pivoted atone end to the stationary bar A, and at the opposite end is carried adjustably by a thumb-screw, a, passing through said bar A, to carry the carriage H farther away from the cone at this end of its travel and permit a sufficient length of wire to be unwoundand pass beyond a plane passing vertically through the center of the cone be-' fore it is cut off. 1

The upper end of the'vertical rod it carries the clamp K. It consists of a hollow frame for the passage of the spring-wire Z. Pivoted to the frame of the clamp are the two rollers 7c, on one side of the passage for the wire Z,whi.le on the opposite side, on aplane passing halfway between the rollers k, is athumb-nut, It", the point of which is rounded and adapted to bear against the wire Z with sufficient force to increase the'curved set that-it had already obtained in part when coiled on a reel at the mill where it was manufactured. This increase in the set of the wire before it iswound upon the cone-forming cones is important, as it insures the climbing of the cone by the wire while forming the coiled spring, and the spring obtained will stand higher than usual when completed.

To bring the wire from the reel to the feedclamp K without danger of kinking, the feedcarriage H has on its right side an arm, H that carries a small roller, H at the top, against which the wire bears while in the guiding-groove of said arm.

To cut off the wire after the spring has been completed, a stationary jaw, m, is secured to the frame of the machine, andmade to project in front of the cone F, and pivoted to said jaw is the jaw m, that is opened and closed at the proper time by means of the horizontal rod m, to the rear end of which is pivoted. the vertical rod m", having its lower end pivoted to one end of the walking-beam M, and the latter is pivoted upon the shaft 13 and has'its rear end depressed by a can], M, upon the shaft 0.

Having now fully described my invention, I'claim- 1. In a wirecoiling machine, the combination of the gear C, its pitnian-rod c, the segmental gear D, its internal arm, d, connected to the pitman-rod, the pinion c, meshing with c, the segmental gear D, having recess (2 the internal arm, d, connected to the pitman-rod and carrying the pivoted dog (1, with the trip (2, having two arms and gearing connected with a shaft carrying a wire-coiling cone, substantially as and for the purpose described.

3. The combination of the spring-forming cones with an arm pivoted above said cones, the pinion f gearf, and springf upon said arm, the connectingrod A, and cams to re ciprocate the same, substantially as and for the purpose described.

4. Theeoinbinationofaspring-formingcone having pins projecting from its small end, an arm pivoted abovesaid cone and mounted up 011 said arm, a pinion carrying a plunger having its flat end adapted to enter between the pins upon said cone, the gearf, springf, and means to reciprocate the arm, substantially as described.

5. The combination ofspringformingcones, the feed-carriage H, having vertical arm H, the horizontal arm 71.", pivoted thereto, the pendent rod 7L", finger h atits lower end, and guide-plate I, having the groove 2', substan tially as and for the purpose described.

6. The combination of the spring-forming cones, the feed-carriage H, having vertical arm H, the horizontal arm h, and clamp K, with the finger h and guide-plate I, substantially as and for the purpose described.

7. The combination of the spring-forming cone, the feed-carriage having the vertical arm H and finger h, with the guide-plate I, having one end adjustably connected to the frame, substantially as and for the purpose described.

8. The combination of a frame carrying means for intermittingly revolving a springforming cone, and an arm, A", pivoted to the latter, having means for revolving another cone in the opposite direction from the first, with the cone F having a pyramidal pin projeeting from its small end, and the cone F, having a corresponding recess, substantially as and for the purpose described.

9. The combination ofa spring-forming cone, the feed-carriage, itsvertical arm H horizontal arm h", and clamp K, having two frictionrollers, and between them a clamping-screw, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

HIRAM S. HALL.

\Vitnesses:

JEROME B. FISHER, A. O. WADE. 

